13道综合布线试题（13 wiring questions）.docVIP

13道综合布线试题（13 wiring questions） Test one: the transmission medium used in LAN twisted pair, coaxial cable and optical fiber etc.. 10BASE-T uses 3 types of UTP, the provisions from the transceiver to active hub distance not exceeding __ (1 meters) __. The 100BASE-TX data transmission rate is increased by 10 times, while the network coverage __ (2) __. If tPHY said physical layer delay workstation, C said the speed of light, S said tR said the segment length, repeater delay, 10BASE-5 maximum configuration, time slot conflict is approximately equal to the __ (3) __. The fiber is divided into single-mode fiber and multimode fiber, compared with the main characteristics of multimode fiber, single-mode fiber is __ (4) __, in order to make full use of its capacity, can be used __ (5) and multi-path signal transmission technology __. (1) A.100 B.185 C.300 D.1000 (2) A. unchanged B. reduced C. extended D. is not restricted (3) A.S/0.7C+2tPHY+8tR B.2S/O.7C+2tPHY+8tR C.2S/0.7C+tPHY+8tR D.2S/0.7C+2tPHY+4tR (4) A. high speed, short distance, high cost, large core line B. high speed, long distance, low cost, large core line C. high speed, short distance, low cost, fine wire D. high speed, long distance, high cost, fine wire (5) A.TDM B.FDM C.WDM D.ATDM The answer: A B B D C Item analysis: the topic familiarity in checking students network media Item two: transmission media Ethernet standard when __ 100BASE-TX regulations (1) __. (1) A.3 UTP B.5 UTP C. D. single mode fiber multimode fiber The answer: B Item analysis: the topic familiarity in checking students network media Test three: twisted pair made of cross line (end by EIA/TIA 568A line sequence, the other end to EIA/TLA 568B line sequence) two, the equipment can be connected to the twisted pair __ (1) __. (1) A. card and B. card with the switch card C. card and D. Ethernet switch hub and a switch UPLINK port The answer: A Item analysis: this problem through line to cross the line, in the students, familiarity with the respect